Transplant; Failure, Heart

• UC San Diego Health — La Jolla, California, United States
• Cedars Sinai Medical Center — Los Angeles, California, United States
• University of California Los Angeles — Los Angeles, California, United States
• Stanford University — Stanford, California, United States

• University of Alberta — Edmonton, Alberta, Canada

• Baylor Scott & White Health Research Institute — Dallas, Texas, United States

• Baylor Scott & White health research institute — Dallas, Texas, United States

• Children's Hospital of Los Angeles — Los Angeles, California, United States
• Lucile Packard Children's Hospital-Stanford — Palo Alto, California, United States
• Children's Hospital Colorado — Aurora, Colorado, United States
• Children's National — Washington D.C., District of Columbia, United States

• Skane University Hospital — Lund, Skåne County, Sweden

• Toronto General Hospital — Toronto, Ontario, Canada

• University of Nebraska Medical Center — Omaha, Nebraska, United States
• St. Paul's Hospital — Vancouver, British Columbia, Canada
• Ottawa Heart Institute — Ottawa, Ontario, Canada
• Toronto General Hospital UHN — Toronto, Ontario, Canada

• University of Alberta — Edmonton, Alberta, Canada

Not specified